目 录1 适用范围..........................................................................................................................42 引用技术标准.................................................................................................................43 作业准备..........................................................................................................................43.1 技术准备...............................................................................................................43.1.1 一般准备..................................................................................................43.1.2 现场勘查..................................................................................................53.1.3 劳动力准备..............................................................................................53.1.4 其他准备....................................................................................................53.1.5 土方开挖条件............................................................................................54 基坑开挖的一般原则.....................................................................................................65 基坑土方开挖方法..........................................................................................................85.1 基坑不同边界形式下的土方开挖方法...............................................................85.1.1 基坑放坡土方开挖方法............................................................................95.1.2 有围护的基坑土方开挖方法....................................................................95.1.3 放坡与围护相结合的基坑土方开挖方法..............................................115.2 基坑边界面不同长度条件下的土方分层分段开挖方法.................................125.2.1 基坑边界面不分段土方开挖方法..........................................................125.2.2 基坑边界面分段土方开挖方法...............................................
